/**
  ******************************************************************************
  * File Name          : USART.c
  * Description        : This file provides code for the configuration
  *                      of the USART instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
volatile uint8_t rx_len = 0;        //接收数据长度
volatile uint8_t recv_end_flag = 0; //接收完成标记位
uint8_t rx_buffer[65];              //接收缓存
char BUFFER_SIZE = 65;              //不定长数据的最大长度，设置为100则最大长度为100


/* USER CODE END 0 */

UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
DMA_HandleTypeDef hdma_usart1_tx;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart2_rx;
DMA_HandleTypeDef hdma_usart2_tx;

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 2000000;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
  }
  __HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);        //使能idle中断
   HAL_UART_Receive_DMA(&huart1,rx_buffer,BUFFER_SIZE);  //打开DMA接收，数据存入rx_buffer数组中。
}
/* USART2 init function */

void MX_USART2_UART_Init(void)
{

  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
  }
  __HAL_UART_ENABLE_IT(&huart2, UART_IT_IDLE);        //使能idle中断
   HAL_UART_Receive_DMA(&huart2,rx_buffer,BUFFER_SIZE);  //打开DMA接收，数据存入rx_buffer数组中。
}

void HAL_UART_MspInit(UART_HandleTypeDef *uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if (uartHandle->Instance == USART1)
  {
    /* USER CODE BEGIN USART1_MspInit 0 */

    /* USER CODE END USART1_MspInit 0 */
    /* USART1 clock enable */
    __HAL_RCC_USART1_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART1 GPIO Configuration    
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

//    /* USART1 DMA Init */
//    /* USART1_TX Init */
//    hdma_usart1_tx.Instance = DMA1_Channel4;
//    hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
//    hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
//    hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
//    hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
//    hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
//    hdma_usart1_tx.Init.Mode = DMA_CIRCULAR;
//    hdma_usart1_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
//    if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
//    {
//    }

//    __HAL_LINKDMA(uartHandle, hdmatx, hdma_usart1_tx);

//    /* USART1_RX Init */
//    hdma_usart1_rx.Instance = DMA1_Channel5;
//    hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
//    hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
//    hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
//    hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
//    hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
//    hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
//    hdma_usart1_rx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
//    if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK)
//    {
//    }

//    __HAL_LINKDMA(uartHandle, hdmarx, hdma_usart1_rx);

    /* USART1 interrupt Init */
    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(USART1_IRQn);
    /* USER CODE BEGIN USART1_MspInit 1 */

    /* USER CODE END USART1_MspInit 1 */
  }
  else if (uartHandle->Instance == USART2)
  {
    /* USER CODE BEGIN USART2_MspInit 0 */

    /* USER CODE END USART2_MspInit 0 */
    /* USART2 clock enable */
    __HAL_RCC_USART2_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART2 GPIO Configuration    
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_2;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

//    /* USART2 DMA Init */
//    /* USART2_RX Init */
//    hdma_usart2_rx.Instance = DMA1_Channel6;
//    hdma_usart2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
//    hdma_usart2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
//    hdma_usart2_rx.Init.MemInc = DMA_MINC_ENABLE;
//    hdma_usart2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
//    hdma_usart2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
//    hdma_usart2_rx.Init.Mode = DMA_NORMAL;
//    hdma_usart2_rx.Init.Priority = DMA_PRIORITY_LOW;
//    if (HAL_DMA_Init(&hdma_usart2_rx) != HAL_OK)
//    {
//    }

//    __HAL_LINKDMA(uartHandle, hdmarx, hdma_usart2_rx);

//    /* USART2_TX Init */
//    hdma_usart2_tx.Instance = DMA1_Channel7;
//    hdma_usart2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
//    hdma_usart2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
//    hdma_usart2_tx.Init.MemInc = DMA_MINC_ENABLE;
//    hdma_usart2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
//    hdma_usart2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
//    hdma_usart2_tx.Init.Mode = DMA_NORMAL;
//    hdma_usart2_tx.Init.Priority = DMA_PRIORITY_LOW;
//    if (HAL_DMA_Init(&hdma_usart2_tx) != HAL_OK)
//    {
//    }

//    __HAL_LINKDMA(uartHandle, hdmatx, hdma_usart2_tx);

    /* USER CODE BEGIN USART2_MspInit 1 */

    /* USER CODE END USART2_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef *uartHandle)
{

  if (uartHandle->Instance == USART1)
  {
    /* USER CODE BEGIN USART1_MspDeInit 0 */

    /* USER CODE END USART1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART1_CLK_DISABLE();

    /**USART1 GPIO Configuration    
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX 
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);

    /* USART1 DMA DeInit */
    HAL_DMA_DeInit(uartHandle->hdmatx);
    HAL_DMA_DeInit(uartHandle->hdmarx);

    /* USART1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART1_IRQn);
    /* USER CODE BEGIN USART1_MspDeInit 1 */

    /* USER CODE END USART1_MspDeInit 1 */
  }
  else if (uartHandle->Instance == USART2)
  {
    /* USER CODE BEGIN USART2_MspDeInit 0 */

    /* USER CODE END USART2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART2_CLK_DISABLE();

    /**USART2 GPIO Configuration    
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX 
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2 | GPIO_PIN_3);

    /* USART2 DMA DeInit */
    HAL_DMA_DeInit(uartHandle->hdmarx);
    HAL_DMA_DeInit(uartHandle->hdmatx);
    /* USER CODE BEGIN USART2_MspDeInit 1 */

    /* USER CODE END USART2_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
